took aim and hit one student in taft high school. he then aimed specifically at another classmate but missed. our reporter is live with the latest. kyung, every time you hear these stories break now, a shudder comes with it because of what happened at sandy hook. what do we know about what happened here? >> reporter: we're learning actually a little bit more. police officers just briefed us, piers, within the last hour or so. what they're telling us is that the 16-year-old shooter actually planned this, began the planning of it last night. he took the shotgun from his home, the home he's living in. it belongs to his brother, his 19-year-old brother. and the atf right now are tracking the exact registration of the shotgun. he then got the rounds. he went to bed, he knew that he would come to school late, slip in through a side door. police say they have video of him entering the school. he went into his classroom, directly to those two boys who he says he tells police who were bullying him.